- To study the development of secondary sexual characteristics
and pubertal changes in boys and girls.
- To study growth and development in relation to earlier
(5-7 yrs of age) nutritional status of the same children.
- To study the skeletal maturity during adolescence.
This study was carried out during the period 1986 to 1991
in rural and urban slum areas in different regions of India
to study the growth patterns of Indian children during adolescence.
The study was carried out by six centres covering five rural
areas and two urban slum areas as listed below:
||Postgraduate Institute for Medical
Education and Research, Chandigarh
||National Institute of Nutrition, Hyderabad
||Medical College, Jabalpur
|| Banaras Hindu University, Varanasi
||Christian Medical College, Vellore
||Rural and Urban slum
||All India Institute of Medical Sciences
A total of 6829 children including 3517 boys
and 3312 girls in the age group of 9-12 years were included
in the study. These children were taken from an earlier cohort
study conducted by the Indian Council of Medical Research
during the period 1981-86 on growth and development of children
in relation to nutritional status. In that study all children
of 0-2 and 5-7 years of age from the selected villages were
identified through a door to door household survey and were
enrolled for a longitudinal follow up study. These two cohorts
of children were followed up for a period of 5 years, thus
the children of second cohort were about 10-12 years of age
at the time of completion of that study. It was then felt
that this group of preadolescent children if followed up further
would provide valuable data on growth and development during
adolescence. Therefore this project was initiated in 1986
for a duration of 5 years.
A household survey in the study areas was
conducted at the initiation of the project and eligible children
available for longitudinal follow-up were identified and enrolled.
These children were followed at six monthly